This is an optional Pro-line PRO-2 Front Clamping Hex Set, and is intended for use with the Traxxas Slash 1/10 scale short course truck. Aluminum hexes are a huge upgrade over the stock plastic hexes in terms of both durability and style. These Pro-Line PRO-2 clamping hexes will stand up to the power you throw at your Slash and will not fall off like the stock plastic hexes. These hexes are also emblazoned with Pro-Line Blue and a laser etched P-L logo.